Instructions / Assembly

ManualsBrandsFantech ManualsBathDual Grille 270 CFM Bathroom Exhaust Fan

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Flexible Duct Installation Hints

Fantech strongly recommends the use of flexible insulated duct where

ducting passes through unconditioned space or where noise is a factor.

Check local code requirements before installing. Failure to use insulated

flexible duct could result in excessive condensation buildup within the

duct, and undesirable sound levels within the room.

A minimum of 8' of insulated flexible duct is recommended between

the fan and any inlet grille. Duct should be stretched as tight and

straight as possible. Failure to do so could result in dramatic loss of

system performance. Connect flex duct to the fan with plastic zip ties or

duct tape. Connections should be airtight as possible for maximum

performance.

* The ducting from this fan to the outside of the building has a strong effect on the airflow,

noise and energy use of the fan. Use the shortest, straightest duct routing possible for best

performance, and avoid installing the fan with smaller ducts than recommended. Insulation

around the ducts can reduce energy loss and inhibit mold growth. Fans installed with existing

ducts may not achieve their rated air flow.

Installating Fan and Bracket

1. Before selecting mounting location for fan, consider the following:

a) Mount fan a minimum of 8ft. from the intake grill using insulated

flexible duct to insure a quiet operation.

b) Place fan where it can be easily accessed for service.

2. Attach the mounting bracket to a support beam with wood screws

provided. Fan can be mounted at any point along the duct and at any

angle. Vertical mounting is recommended to reduce condensation in the

fan. For horizontally mounting, either wrap insulation around the fan or

drill a 1 1/4" hole in the bottom of the housing. Add NPT insert and

drain tube (purchased separately) for drainage of condensation .

3. For PB Series fans, if bracket is used to mount fan, refer to illustration 1.

If suspending fan with hanger straps, refer to illustration 2.

4. Connect duct to inlet and outlet of fan using plastic ties or duct tape

(purchased separately). When using insulated flexible duct, the inner

vinyl core should be clamped or taped to the inlet and outlet and the

vapor barrier surrounding the insulation should be duct taped to the fan

housing.

Note: Steps 2 & 3 may be reversed.

Fantech recommends insulated flexible duct for all bathroom exhaust

applications.

Electrical Connection

1. Remove the screws securing the terminal box cover located on the

fan motor mounting bracket. All fan motor and capacitor connections

are pre-wired to an electrical terminal strip. A 3/8" romex type cable

restraint connector will be needed to secure the wiring through the

knockout on the side of the terminal box.

2. Bring incoming electrical service through the romex connector and

the fan electrical service opening. Be sure to place the connector nut

over the wiring coming into the terminal box. There are two open ports

on the terminal strip. Using a small regular screwdriver, tighten the

neutral (white) wire of the incoming supply under the open terminal strip

port labeled “N”. Tighten the line (black) wire of the incoming supply

under the open terminal strip port labeled “L” to the ground connection

on the terminal block.

3. Secure the romex connector. Secure the incoming supply with the

romex connector. Place the capacitor back into the terminal box.

Replace the fan terminal box cover. All fan motor and capacitor connec-

tions have been pre-wired from the factory. No additional fan wiring is

necessary.

Illustration 1

Fan bracket should be installed, then fan mounted directly to bracket using sheet metal screws.

Illustration 2

Fans may be suspended

without special

mounting brackets.

Clamp Fastener

Duct Fan

Spiral duct

Vibration absorbing material

Mounting Bracket & Screw Locations for FG

• PB190

• PB270-2

• PB270H-2

• PB270L7-2

• PB270L10-2

• PB270L710-2

• PB270HV-2

• PB270L7V-2

• PB270L10V-2

• PB110

• PB110H

• PB110L7

• PB110L10